ORIGINAL RESEARCH article
Front. Environ. Sci.
Sec. Water and Wastewater Management
Biodecolorization of Reactive Red 120 Azo Dye by Metal-Ion Tolerant Lysinibacillus capsici Bacteria and its Application Potential in Textile Effluents Treatment
Provisionally accepted
- 1Guru Ghasidas Vishwavidyalaya, Bilaspur, India
- 2National Institute of Technology Jamshedpur, Jamshedpur, India
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Currently, the textile industry is among the most rapidly expanding areas of the economy and is an important source of water pollution. There are many efficient chemical and physical methods for treating textile effluent, but they produce secondary pollutants. Therefore, there is a need to manage the textile waste wastewater. The potential Lysinibacillus capsici bacteria strain has been isolated from the bark borer insect tunnel from Peltophorum pterocarpum plant, and has been determined to be effective in > 95 decolorizing Reactive Red 120, and other azo dyes such as AB 113 85%, orange II 94.62%, Congo red 94.62%, phenol red 94.54%, and mixtures of azo dyes 81.66%. Physico-chemical factors were optimized manually, including Taguchi design. Fabric discolorations of L. capsici were qualitatively studied. The FTIR, GC-MS, and UV absorbance studies also confirmed that the dye had been broken into its amines. Research findings using enzyme assays have shown that the bacteria Lysinibacillus capsici can utilize laccase and manganese peroxidase and are capable of degrading dyes significantly. According to this work, immobilized L. capsici cells and the studied four bacterial consortiums, Lysinibacillus capsici, Alcaligenes faecalis subsp. Phenolicus, Acinetobacter baumanni, and Pseudomonas aeruginosa may be employed to degrade RR120 effectively, and it is concluded that L. capsici bacteria is significantly efficient in textile effluent treatment.
Keywords: RR120, dye degradation, Biodegradation, Bacterial consortia, metal-ion tolerant, Immobilized cell
Received: 19 Aug 2025; Accepted: 29 Sep 2025.
Copyright: © 2025 Lata, Singh, Ambade and Kumar. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Ashish Kumar, banjaraashish@gmail.com
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